From: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
To: mpe@ellerman.id.au, mikey@neuling.org
Cc: apopple@linux.ibm.com, paulus@samba.org, npiggin@gmail.com,
christophe.leroy@c-s.fr, naveen.n.rao@linux.vnet.ibm.com,
peterz@infradead.org, jolsa@kernel.org, oleg@redhat.com,
fweisbec@gmail.com, mingo@kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
ravi.bangoria@linux.ibm.com
Subject: [PATCH v5 05/16] powerpc/watchpoint: Provide DAWR number to set_dawr
Date: Mon, 11 May 2020 08:29:00 +0530 [thread overview]
Message-ID: <20200511025911.212827-6-ravi.bangoria@linux.ibm.com> (raw)
In-Reply-To: <20200511025911.212827-1-ravi.bangoria@linux.ibm.com>
Introduce new parameter 'nr' to set_dawr() which indicates which DAWR
should be programed.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Reviewed-by: Michael Neuling <mikey@neuling.org>
---
arch/powerpc/include/asm/hw_breakpoint.h | 4 ++--
arch/powerpc/kernel/dawr.c | 15 ++++++++++-----
arch/powerpc/kernel/process.c | 2 +-
3 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h
index 518b41eef924..5b3b02834e0b 100644
--- a/arch/powerpc/include/asm/hw_breakpoint.h
+++ b/arch/powerpc/include/asm/hw_breakpoint.h
@@ -104,10 +104,10 @@ static inline bool dawr_enabled(void)
{
return dawr_force_enable;
}
-int set_dawr(struct arch_hw_breakpoint *brk);
+int set_dawr(int nr, struct arch_hw_breakpoint *brk);
#else
static inline bool dawr_enabled(void) { return false; }
-static inline int set_dawr(struct arch_hw_breakpoint *brk) { return -1; }
+static inline int set_dawr(int nr, struct arch_hw_breakpoint *brk) { return -1; }
#endif
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/kernel/dawr.c b/arch/powerpc/kernel/dawr.c
index e91b613bf137..8114ad3a8574 100644
--- a/arch/powerpc/kernel/dawr.c
+++ b/arch/powerpc/kernel/dawr.c
@@ -16,7 +16,7 @@
bool dawr_force_enable;
EXPORT_SYMBOL_GPL(dawr_force_enable);
-int set_dawr(struct arch_hw_breakpoint *brk)
+int set_dawr(int nr, struct arch_hw_breakpoint *brk)
{
unsigned long dawr, dawrx, mrd;
@@ -39,15 +39,20 @@ int set_dawr(struct arch_hw_breakpoint *brk)
if (ppc_md.set_dawr)
return ppc_md.set_dawr(dawr, dawrx);
- mtspr(SPRN_DAWR0, dawr);
- mtspr(SPRN_DAWRX0, dawrx);
+ if (nr == 0) {
+ mtspr(SPRN_DAWR0, dawr);
+ mtspr(SPRN_DAWRX0, dawrx);
+ } else {
+ mtspr(SPRN_DAWR1, dawr);
+ mtspr(SPRN_DAWRX1, dawrx);
+ }
return 0;
}
static void set_dawr_cb(void *info)
{
- set_dawr(info);
+ set_dawr(0, info);
}
static ssize_t dawr_write_file_bool(struct file *file,
@@ -60,7 +65,7 @@ static ssize_t dawr_write_file_bool(struct file *file,
/* Send error to user if they hypervisor won't allow us to write DAWR */
if (!dawr_force_enable &&
firmware_has_feature(FW_FEATURE_LPAR) &&
- set_dawr(&null_brk) != H_SUCCESS)
+ set_dawr(0, &null_brk) != H_SUCCESS)
return -ENODEV;
rc = debugfs_write_file_bool(file, user_buf, count, ppos);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 8479c762aef2..7488adf4d61c 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -806,7 +806,7 @@ void __set_breakpoint(struct arch_hw_breakpoint *brk)
if (dawr_enabled())
// Power8 or later
- set_dawr(brk);
+ set_dawr(0, brk);
else if (IS_ENABLED(CONFIG_PPC_8xx))
set_breakpoint_8xx(brk);
else if (!cpu_has_feature(CPU_FTR_ARCH_207S))
--
2.21.1
WARNING: multiple messages have this Message-ID (diff)
From: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
To: mpe@ellerman.id.au, mikey@neuling.org
Cc: apopple@linux.ibm.com, ravi.bangoria@linux.ibm.com,
peterz@infradead.org, fweisbec@gmail.com, oleg@redhat.com,
npiggin@gmail.com, linux-kernel@vger.kernel.org,
paulus@samba.org, jolsa@kernel.org,
naveen.n.rao@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org,
mingo@kernel.org
Subject: [PATCH v5 05/16] powerpc/watchpoint: Provide DAWR number to set_dawr
Date: Mon, 11 May 2020 08:29:00 +0530 [thread overview]
Message-ID: <20200511025911.212827-6-ravi.bangoria@linux.ibm.com> (raw)
In-Reply-To: <20200511025911.212827-1-ravi.bangoria@linux.ibm.com>
Introduce new parameter 'nr' to set_dawr() which indicates which DAWR
should be programed.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Reviewed-by: Michael Neuling <mikey@neuling.org>
---
arch/powerpc/include/asm/hw_breakpoint.h | 4 ++--
arch/powerpc/kernel/dawr.c | 15 ++++++++++-----
arch/powerpc/kernel/process.c | 2 +-
3 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h
index 518b41eef924..5b3b02834e0b 100644
--- a/arch/powerpc/include/asm/hw_breakpoint.h
+++ b/arch/powerpc/include/asm/hw_breakpoint.h
@@ -104,10 +104,10 @@ static inline bool dawr_enabled(void)
{
return dawr_force_enable;
}
-int set_dawr(struct arch_hw_breakpoint *brk);
+int set_dawr(int nr, struct arch_hw_breakpoint *brk);
#else
static inline bool dawr_enabled(void) { return false; }
-static inline int set_dawr(struct arch_hw_breakpoint *brk) { return -1; }
+static inline int set_dawr(int nr, struct arch_hw_breakpoint *brk) { return -1; }
#endif
#endif /* __KERNEL__ */
diff --git a/arch/powerpc/kernel/dawr.c b/arch/powerpc/kernel/dawr.c
index e91b613bf137..8114ad3a8574 100644
--- a/arch/powerpc/kernel/dawr.c
+++ b/arch/powerpc/kernel/dawr.c
@@ -16,7 +16,7 @@
bool dawr_force_enable;
EXPORT_SYMBOL_GPL(dawr_force_enable);
-int set_dawr(struct arch_hw_breakpoint *brk)
+int set_dawr(int nr, struct arch_hw_breakpoint *brk)
{
unsigned long dawr, dawrx, mrd;
@@ -39,15 +39,20 @@ int set_dawr(struct arch_hw_breakpoint *brk)
if (ppc_md.set_dawr)
return ppc_md.set_dawr(dawr, dawrx);
- mtspr(SPRN_DAWR0, dawr);
- mtspr(SPRN_DAWRX0, dawrx);
+ if (nr == 0) {
+ mtspr(SPRN_DAWR0, dawr);
+ mtspr(SPRN_DAWRX0, dawrx);
+ } else {
+ mtspr(SPRN_DAWR1, dawr);
+ mtspr(SPRN_DAWRX1, dawrx);
+ }
return 0;
}
static void set_dawr_cb(void *info)
{
- set_dawr(info);
+ set_dawr(0, info);
}
static ssize_t dawr_write_file_bool(struct file *file,
@@ -60,7 +65,7 @@ static ssize_t dawr_write_file_bool(struct file *file,
/* Send error to user if they hypervisor won't allow us to write DAWR */
if (!dawr_force_enable &&
firmware_has_feature(FW_FEATURE_LPAR) &&
- set_dawr(&null_brk) != H_SUCCESS)
+ set_dawr(0, &null_brk) != H_SUCCESS)
return -ENODEV;
rc = debugfs_write_file_bool(file, user_buf, count, ppos);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 8479c762aef2..7488adf4d61c 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -806,7 +806,7 @@ void __set_breakpoint(struct arch_hw_breakpoint *brk)
if (dawr_enabled())
// Power8 or later
- set_dawr(brk);
+ set_dawr(0, brk);
else if (IS_ENABLED(CONFIG_PPC_8xx))
set_breakpoint_8xx(brk);
else if (!cpu_has_feature(CPU_FTR_ARCH_207S))
--
2.21.1
next prev parent reply other threads:[~2020-05-11 3:00 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-11 2:58 [PATCH v5 00/16] powerpc/watchpoint: Preparation for more than one watchpoint Ravi Bangoria
2020-05-11 2:58 ` Ravi Bangoria
2020-05-11 2:58 ` [PATCH v5 01/16] powerpc/watchpoint: Rename current DAWR macros Ravi Bangoria
2020-05-11 2:58 ` Ravi Bangoria
2020-05-11 2:58 ` [PATCH v5 02/16] powerpc/watchpoint: Add SPRN macros for second DAWR Ravi Bangoria
2020-05-11 2:58 ` Ravi Bangoria
2020-05-11 2:58 ` [PATCH v5 03/16] powerpc/watchpoint: Introduce function to get nr watchpoints dynamically Ravi Bangoria
2020-05-11 2:58 ` Ravi Bangoria
2020-05-11 2:58 ` [PATCH v5 04/16] powerpc/watchpoint/ptrace: Return actual num of available watchpoints Ravi Bangoria
2020-05-11 2:58 ` Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria [this message]
2020-05-11 2:59 ` [PATCH v5 05/16] powerpc/watchpoint: Provide DAWR number to set_dawr Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 06/16] powerpc/watchpoint: Provide DAWR number to __set_breakpoint Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 07/16] powerpc/watchpoint: Get watchpoint count dynamically while disabling them Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 08/16] powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 09/16] powerpc/watchpoint: Convert thread_struct->hw_brk to an array Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 10/16] powerpc/watchpoint: Use loop for thread_struct->ptrace_bps Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 11/16] powerpc/watchpoint: Introduce is_ptrace_bp() function Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 12/16] powerpc/watchpoint: Use builtin ALIGN*() macros Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 13/16] powerpc/watchpoint: Prepare handler to handle more than one watcnhpoint Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 14/16] powerpc/watchpoint: Don't allow concurrent perf and ptrace events Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 15/16] powerpc/watchpoint/xmon: Don't allow breakpoint overwriting Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
2020-05-11 2:59 ` [PATCH v5 16/16] powerpc/watchpoint/xmon: Support 2nd DAWR Ravi Bangoria
2020-05-11 2:59 ` Ravi Bangoria
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